I have no idea what was on these guy's exam, and it has absolutely no bearing on what will be on your exam.
This I agree with. Study what's on the NCEES breakdown, and be prepared for everything on there.
I'm as paranoid as you are benbo, so I won't go into specifics, but on my exam there were at least 4 sections mentioned on the NCEES paperwork which were not covered by the exam. There were not, however, any questions on the exam which weren't mentioned on the NCEES paperwork.... so I would guess they won't surprise you with anything. However don't bank on a certain area carrying you because NCEES says it will be a certain %age, it may be no where near that.
I don't understand what you mean about NCEES paperwork. Do you mean the diagnostic? Because I thought you passed the exam, in which case you wouldn't get a diagnostic generally. Unless they send this in some states like Texas or something.
If you actually got a diagnostic which said you got a certain percentage in an area which you feel wasn't even on the test then either -
1. That is a SERIOUS problem which needs to be addressed by NCEES. They are lying to you, and to other examinees who depend on this diagnostic to study.
or
2. They interpet the subject matter "section" of a question differently than you do. which is what I posted about five posts back. I go with this explanation, and I would defer to the panel of experts who actually prepare the exam.